
Lecture Description
Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out. Their key anatomical differences - where nerve fibers originate and where their ganglia are located - drive their distinct anatomical functions, making your sympathetic nervous system the "fight or flight" while your parasympathetic nervous system is for "resting and digesting."
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Table of Contents
The Basic Two-Part System of the Autonomic Nervous System 0:48
Sympathetic Nervous System 2:33
Parasympathetic Nervous System 2:54
Their Nerve Fibers Originate in Different Parts of the Body 3:22
Sympathetic Ganglia Are Close to the Spinal Cord 4:36
Parasympathetic Ganglia Are Close to Their Effectors 4:59
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Course Index
- Introduction to Anatomy & Physiology
- Tissues, Part 1
- Tissues, Part 2 - Epithelial Tissue
- Tissues, Part 3 - Connective Tissues
- Tissues, Part 4 - Types of Connective Tissues
- The Integumentary System, Part 1: Skin Deep
- The Integumentary System, Part 2: Skin Deeper
- The Nervous System, Part 1
- The Nervous System, Part 2: Action! Potential!
- The Nervous System, Part 3: Synapses!
- Central Nervous System
- Peripheral Nervous System
- Autonomic Nervous System
- Sympathetic Nervous System
- Parasympathetic Nervous System
- Taste & Smell
- Hearing & Balance
- Vision
- The Skeletal System
- Joints
- Muscles, Part 1 - Muscle Cells
- Muscles, Part 2 - Organismal Level
- Endocrine System, Part 1 - Glands & Hormones
- Endocrine System, Part 2 - Hormone Cascades
- The Heart, Part 1 - Under Pressure
- The Heart, Part 2 - Heart Throbs
- Blood Vessels, Part 1 - Form and Function
- Blood Vessels, Part 2
- Blood, Part 1 - True Blood
- Blood, Part 2 - There Will Be Blood
- Respiratory System, Part 1
- Respiratory System, Part 2
- Digestive System, Part 1
- Digestive System, Part 2
- Digestive System, Part 3
- Metabolism & Nutrition, Part 1
- Metabolism & Nutrition, Part 2
- Urinary System, Part 1
- Urinary System, Part 2
- Reproductive System, Part 1: Female Reproductive System
- Reproductive System, Part 2: Male Reproductive System
- Reproductive System, Part 3: Sex & Fertilization
- Reproductive System, Part 4: Pregnancy & Development
- Lymphatic System
- Immune System, Part 1
- Immune System, Part 2
- Immune System, Part 3
Course Description
In this Crash Course series, Hank Green teaches most of what you should know about anatomy and physiology, perfect for a freshman-level biology course, or just your own curiosity about the human body.